hybris/egl/platforms/common/support.h

   1 #ifndef SUPPORT_H_
   2 #define SUPPORT_H_
   3
   4 #include <stddef.h>
   5
   6 /**
   7  * container_of - cast a member of a structure out to the containing structure
   8  * @ptr:        the pointer to the member.
   9  * @type:       the type of the container struct this is embedded in.
  10  * @member:     the name of the member within the struct.
  11  *
  12  */
  13 #define container_of(ptr, type, member) ({                      \
  14         const typeof( ((type *)0)->member ) *__mptr = (ptr);    \
  15         (type *)( (char *)__mptr - offsetof(type,member) );})
  16
  17 #endif